Window-blind



UNITED STAT S PATENT OFFiciE.

JOHN JOHNsON GULDHANG, OF STOUGHTON,. WIs'OONsIN.

WINDOW-BLIND.

SPECIFICATION forming part of Letters Patent No. 349,252, datedSeptember 14, 1886.

' Application filed May 17, 1886. Serial No. 202,380. (No model.)

To all whom it may concern:

Be it known that I, JOHN JOHNsoN GULD HANG, a resident of Stoughton, inthe county of Dane and State of 'Wisconsin, have invented certain newand useful Improvements in Window-Blinds; and I do hereby declare thatthe following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,which form a part of this specification, and in which- Figure 1 is aview from the inside of my improved window-blind. Fig. 2 is a verticalseetional view on line as 00, Fig. 1. Fig. 3 is a perspective view ofone of the slats, seen from the inner side. Fig. 4 is a similar view ofa slat seen from the outer side, the slat being one of the slats ateither the upper or lower ends of a series, and Fig. 5 is a perspectiveview of the adjusting-rod.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention has relation to slat-b1inds or so-called Venetian blindsfor windows; and it consists in the improved construction andcombination of parts of a blind, in which the slats are formed upontheir inner edges with cylindrical beads, which are engaged by circularnotches in the edge of an adj usting-rod, all staples or hinges beingdispensed with, .as hereinafter more fully described and claimed.

I11 the accompanying drawings, the letter A indicates the frame of theblind, which frame may be of any desired construction, and the letters Bindicate the slats, the trunnions O of which are pivoted in bores in theinner edges of the side pieces of the frame. The inner edges of theseslats are formed with cylindrical beads E, and these beads form groovesF in the outer sides of the slats, and a rod, G, is formed with a numberof circular notches or recesses, H, in its edge fitting upon thesebeads, the notches comprising slightly more than one-half of a circle.The notches by means of which the adj usting-rod may be slid upon thebeaded edges of the slats from the ends of the slats are formed so thattheir upper sides will form pointed shoulders I, which may bear into thegrooves in the outer sides of the slats, stopping the slats from beingtilted farther than into a horizontal position.

The upper and lower slat in a series of slats are formed with a notch orkerf, J, in the middle of the bead, and pins K are driven through therod projecting into the notches in the ends of the rod and project intothese notches or kerfs, retaining the rod upon the slats and preventingit from sliding laterally. The lower end of the adjustingrod is providedwith a plate, L, pivoted to the same, and this plate is provided with alongitudinal slot, M, having notches N in one edge, the slot fittingover a pin or bolt, 0, projecting from the frame of the blind andengaging the notch, which may be placed upon the bolt. The outer orlower edges of the slats will rest in the grooves of the slats belowwhen the slats are tilted vertically, forming a perfect closure,excluding light and rain or other dampness.

The entire blind may be made without the use of metal in any of theparts, and the slats and the adjusting-rods may easily be made withsimple machinery or tools. The joints between the slats and theadjustingrod will be strong, and will at all times be movable, as theyare not liable to be clogged up with rust or dirt, as the metallicjoints, and the notches being made in the edge of the rod,i11 which thegrain of the wood runs lengthwise, the entire piece between two notcheswill llft'VB to be broken out before the slat may be disengaged from thenotch.

In painting the blinds the pins may be removed from the adjusting-rodsand the adj usting-rods slid to one side, slipping Off the heads at theends of the slats, and the slats may now be tilted and revolved so as tobring both sides and the edges in convenient position for paint ingthem, and when the paint is dry the rod may be slid in place again andthe pins inserted, when the blinds will again be in order.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States-- 1. I11 a window-blind, thecombination of slats having cylindrical beads upon their upper edges,with an adj usti'ng-rod having circu lar notches in its edge fittingupon the beaded edges of the slats, as and for the purpose shown and setforth.

2. In a window-blind, the combination of slats having cylindrical beadsupon their upper edges forming grooves upon their outer sides near thesaid edges, with an adjustingrod. having notehes in its edge comprisingslightly more than a sen1i-eirele and formed with pointed shoulders atthe upper sides engaging the grooves in the slats, as and for thepurpose shown and set forth.

3. In a window-blind, the (OlllblllflfiOll of a series of slats havingeylindrieal heads upon their upper edges forming grooves upon the outersides near the said edges, and hating note-hes or kerfs in the middlesof the heads of the upper and lower slat, an adjusting-rod havingnotehes comprising slightly more than a seinieirele in its edge andformed with pointed shoulders at the upper sides of the notehes engagingthe grooves in the slats, and pins inserted through the ends 01" theadjusting-rod. entering the notehes in the ends and JOHN JOHNSONGULDHANG.

Witnesses:

GEORGE W. Gunmen, L" K. Lose.

